Nikon D5100 Guide D’Exploitation

54

z

“ISO sensitivity” is the digital equivalent of film speed. The higher the ISO sensitivity, 
the less light needed to make an exposure, allowing higher shutter speeds or smaller 
apertures, but the more likely the image is to be affected by noise (randomly-spaced 
bright pixels, fog, or lines; noise is particularly likely at settings of Hi 0.3–Hi 2). 
Choosing Auto allows the camera to set ISO sensitivity automatically in response to 
lighting conditions.

If shooting information is not displayed in the monitor, press the 

P button. 

Press the 

P button again to place the cursor in the information display.

Highlight the current ISO sensitivity in the 
information display and press 

J.

Highlight an option and press 

J. To return to 

shooting mode, press the shutter-release button 
halfway.

i, j, %

AUTO

, S, A, M

100–6400 in steps of 1/3 EV; Hi 0.3, Hi 0.7, Hi 1, Hi 2

Other shooting modes

AUTO; 100–6400 in steps of 1/3 EV; Hi 0.3, Hi 0.7, Hi 1, Hi 2

P button